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1). APPEL. FOLDING MECHANISM FOR PAPER BAG MACHINES.

No. 252,412. Patented Jan. 17,1882.

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(No Model.) 3 ShetsSheet 2.-

D. APPEL. FOLDING MECHANISM FOR PAPER BAG MACHINES. N0. 252,412. '7Patented Jan. 17,1882.

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(No Model.) 3 Sheets-Sheet 3.

, D. APPEL. 2. A FOLDING "MECHANISM FOR PAPER BAG MACHINES. No. 252,412.2 Patented Jan. 1'7,18 8Z.'

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-UNITED STATES PAT NT rrcteo DANIEL Arrnn, OEOLEVELAND, onIo,AssIoNon'ro NEWTON w. TAYLOR,

. 1 OF'SAME'PLAOE.

FOLDYINGMEHCHANISM FOR PAPER-BAG- MACHINES.

sPnciFIoAzrIoN forming part: of Letters Paterit No. 252,412, datedJanuary 17, 1882 i i Application filed May 11,3881. (No model.)

' To all whom it may concern Be it known that LDAJNIEL APPEL, ofCleveland, county of Guyahoga,Stateof Ohio, have invented anImprovementin Folding Mechanism for Paper-Bag Machines, of which thefollowing description, in connection with the ac;

companyingdrawings, is a specification.

This invention relates to improvements in mechanism for l'olding'paperinthe formation of the bottoms of bags, and has for its object theconstruction of a machine wherein the successive folds required for theformation of a bag-bottom may be produced by means of two blades andthree rolls, as will behereinal'ter 1 5 described.

M folding apparatus will preferably follow and form' a connected part ofa machine having suitable devices for the production of a tube with adiamond fold at its leadin gend-suclafor indiamond fold may be made byany other wellknown mechanism, and so, also, it'is obvious that themechanism herein described might be spective of the previousformation ofadiamond fold in the tube-as, for instance, in a bag such 0 asrepresented in United States Patent No,

Figure 1 represents in top or plan View a sufficient portion of apaper-bag-making machine to illustrate my invention; Fig. 2, a partial 35 elevation'and section thereof; Fig. 3, a verti- 4o invention.

cal sectional diagram ot'Fig.1; Fig. 4, a modication showing the threerolls and two tuck-- in g-blades undera dift'erentarrangement. Fig. 5 isyet another modification illustratingmy Figs. 6, '7, 8 represent thediamondfolded end of the bag-blank and the same as it will appear afterbeing operated upon by the blades which make the first and secondcrossfolds; and Fig. 9 represents the bag unfolded from the positionFig. 8, showing the bottom engage a spur-gear, (4?, held on a stud, aThis spur-gear will drive an intermediate, a which, in engagement with atoothed wheel, a will positively drive the shaftl), having connectedwith it'the paste-applying surface I), of usual shape, (see full line,Fig. 1, and dotted lines, Fig. 2,) to apply paste to the diamond-foldedpart of the bag blank, as shown iuFigs 6 and 7. The toothed Wheel'aengages the pinion a on and drives the roller 1), which keeps thebag-blank down upon the pasting device and cooperates with it. in cedingthe blank forward to be'folded for the formation .of the bottom. Thisrollerb has a grooved beltwheel, b connected by a crossed belt or cord,b ,.with asimilar grooved wheel on the feeding roller 1).

Above the roller b is a roller, b, which is moved therefrom by friction.

under side/of the blank. Thexrolls b and b areof such size and soarranged with relation to the folding-rollers c c c that the leading endof the bag-blank, provided with the usual diamondfold,willbeplaced bythe feeding-rolls b and'l in such position with relation 'to'the rel-ls0 c as to permitthe first folding or tucking Therolls If and 1) feed thepasted blank forward, in this instance, with the diamond fold formedupon theblade d to strike the bag-blank on the dotted betweentherollerscand e ,.which fold the blank, as shown in Fig. 8, the rollers cc c continuing to feed the blank forward.

The rollers c and g are grooved to receive the cords or tapes 9 extendedabout them and. the guide-roll 9?, as shown.

These tapes continue the movement of the bag after both folds are made",and carryvit between the endless tapes or bands h h which run overrollers g 9 guide-rolls h h and farther to the right over other rollerslike gg but not shown.

'Wlll partially unfold the bag, leaving the bottom, however, fully,folded and pasted, ready to pass to the drying apparatus.

- The rollers g and c are not so far separated one from the other as toneed any support forthe bag while passing from the nip of the belt 9*and roller to the nip of the same belt and roller 9 The bag is stiffenough to support itself and insurethe entrance of us folded end intothe converging space between the belt-,g

. and roller g The rollers I), c, c, and c will be suitably groovedannularly to obviate pressing onthe bag opposite the paste, so as tounduly spread or remove the paste.

The projection f on the folding-bladef, cooperating with the pocket 6,prevents the lead- -ing cross-folded end of the bag from unfolding,

as the said blade tucks it between the rollers c c in forming the secondcross-fold.

The rollersb b have their hearings, as have also the rollers c 0 0 in ahousing or frame, A, supported by a cross-bar, B, the housing beingextended down between the side frames, 0, of the frame, so'as to afford.sutlicient room between the housing and side frames for the receptionof the gears, which, placed on the shatts of the rollers 0,0 0 drivethem in unison at the same speed.

The first folding or tucking blade d is carried by an arm, 01, shown inFigs.2and3 and I in dotted lines, Fig. 1, as secured to a rockshaft, dhaving an arm, (1 attached by link (1 with the crank 01 on the shaft a.At its opposite end this shaft a has a second crank, i, the pin of whichenters'a slot in an arm,f on a rock-shaft,'f having two aims,f ,-whichcarry the bladef.

In Fig. 3, D represents the bag-blank, and 2, 3 the front and rear endsof its diamondfolded portion. At the upper part of Fig. 3 thebag-'bottomis shown as folded twice' for the bottom, the body of the'bag also being folded, as it will be by the bladefa-nd rollers 0 0 Therollers c c c are placed nearly in contact with their surfaces, allmoving in the same direction, and the paper bag, while it receives itstwo cross-folds for the formation of the bottom of the bag, is supportedat its back upon one and the same roller, thus making a Inostcompact andsimple arrangementof parts,

and the two blades tuck the bag-blank into spaces between the peripheryof this same roller and the two others arranged about it.

Instead of the exact arrangement of therollers shown in Figs. 1 to 3, itis obvious that I might make other arrangements or combination ofthreerolls and two blades, which would operate in substantially the samemanner and be within the scope of my inygentiom= Lhave shown such plansin Figs. 4 and 5, which I the central roll, 0, isof greatest diameter,and v the rolls 0 and c are arranged almost in contact with it. Thepaste-applying roller m in Fig. 5 is brought up close to and just abovethe roller 0, and its bearings, as well as those of rollersc, are placedin housings l. The roller m'has paste applied to it by the roller m, it

receiving paste from the roller Win the pasta. box in.

The axles of rollers c c are held in arms Z (shown in dotted lines,)secured at the opposite ends of a shaft, a, sustained in boxes 4 placedin housings n the said boxes and rolls being adjusted toward and fromthe roll 0 by the screws u At the right of roll 0 and below roller 0, I

I haveplaced a shield, a, (shown in dotted lines,)

to receive against it and divert the folded bag down to belts, such asshown in my said patent, to open the fold in the body of the bag.- Theplan represented in Fig. 5 is one I highly approvefor compactnessandsimplicity, and I could yet further modify it by making the rolls a c cof equal diameter and placing roller 0 directly under roller 0, whileroller 0 would have its axle in the same horizontal line as the axle ofroller 0.

It will be noticed in all the modifications that the roller 0 supportsthe main part of the bag-blank, while both of the crossfolds for itsbottom are made by the blades d andf, and that the rolls 0 and 0respectively support the extreme forward end of thebla'nk as the bladesd andfstrike the blank one after the other to tuck or fold the blankfirst between the rollers c c and then between 0 and 0 I am aware thattwo blades and four rollers,

ranged in contact, or nearly so, and two folding or tucking bladesco-operating therewith tofold or tuck the paper-bag blank twice'insuccession between parts of the periphery of that one of the saidrollers which forms a support for the main part of the bag, and the tworollers arranged about it, which support the free or leading end of theblank in advance of the portion engaged by the blade, substantially asdescribed. I I

In testimony whereofl have signed my name to this specification in thepresence of two subscribing witnesses.

. DANIEL APPEL.

Witnesses:

O. E. S'rooKwELL, H. F. KINGSLEY.

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